Add YANG parser

queries/yang/highlights.scm

@@ -0,0 +1,29 @@
+
+(comment) @comment
+
+; Module / submodule
+["module" "submodule"] @keyword
+
+; Keywords
+(statement_keyword) @keyword
+(extension_keyword) @string.escape
+
+; Arguments
+(built_in_type) @type.builtin
+(integer) @number
+(boolean) @boolean
+(date) @number
+(range) @string.escape
+(unquoted_range) @string.escape
+(yang_version) @string.escape
+(identifier) @variable
+(node_identifier) @variable
+(glob) @string
+(string) @string
+(unquoted_string) @string
+(keypath) @string.escape
+
+; Punctuation
+(plus_symbol) @punctuation.delimiter
+["{" "}"] @punctuation.bracket
+[";"] @punctuation.delimiter